Joe Scarborough knocked President-elect Donald Trump on Monday over his dismissal of the CIA's reported assessment that Russian hackers leaked private emails of top Democrats to help Trump win the election.

Over the weekend, Trump repeatedly said he did not believe reports indicating that the CIA told top lawmakers that evidence suggested Russia hacked and subsequently leaked the emails of top Democratic officials specifically to sow discord in a way that would benefit the Republican nominee.

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Hack reveals Democratic Congress members' phone numbers

UNITED STATES - FEBRUARY 11: Rep. Corrine Brown, D-Fla., attends a news conference at the DNC where members of the Congressional Black Caucus PAC endorsed Hillary Clinton for president, February 11, 2016. (Photo By Tom Williams/CQ Roll Call)

Representative James Clyburn, a Democrat from South Carolina, speaks during the Democratic National Convention (DNC) in Philadelphia, Pennsylvania, U.S., on Thursday, July 28, 2016. Division among Democrats has been overcome through speeches from two presidents, another first lady and a vice-president, who raised the stakes for their candidate by warning that her opponent posed an unprecedented threat to American diplomacy. Photographer: David Paul Morris/Bloomberg via Getty Images

UNITED STATES - JUNE 29: Rep. Dutch Ruppersberger, D-Md., attends a rally with lawmakers and gun violence victims to call for action on gun safety measures on the steps of the Cathedral of the Incarnation in Baltimore, Md., June 29, 2016. (Photo By Tom Williams/CQ Roll Call)

UNITED STATES - MAY 16: Rep. John Garamendi, D-Calif., speaks at a news conference in the Capitol Visitor Center on the Smith-Amash Amendment to the FY2013 National Defense Authorization Act that would 'prevent the indefinite detention of and use of military custody for individuals detained on U.S. soil - including U.S. citizens - and ensure access to due process and the federal court system, as the Constitution provides.' (Photo By Tom Williams/CQ Roll Call)

UNITED STATES - JULY 21: Rep. John Yarmuth, D-Ky., speaks with a reporter at the Senate subway on Tuesday, July 21, 2015. (Photo By Bill Clark/CQ Roll Call)

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Scarborough described Trump's criticism of the CIA as "unprecedented" and advised that it was "not a wise thing to do."

"The last agency I would tweak would be the CIA," Scarborough said.

The MSNBC host continued: "That's just got to stop, and it's got to stop immediately. It's bad for the president, it's bad for the agency, especially in 2017. You talk about the tip of the spear — the CIA is the tip of the spear. We do not march out 300,000 people to European battlefields and say 'Charge' anymore. It is the CIA that is basically on the forefront, and putting their lives on the line. That is the last agency you cross when you're the incoming president of the United States."

Following the election, Scarborough has appeared to use his show to informally counsel the president-elect on potential Cabinet selections.

Scarborough repeatedly warned Trump last month against selecting Rudy Giuliani, the former New York mayor, as secretary of state.